Frank, un hombre solero que crió solo a su sobrina prodigio Mary, tiene que pelear con la madre biológica de la niña su custodia.
 | John Finn | Aubrey Highsmith |
 | Chris Evans | Frank Adler |
| McKenna Grace | Mary Adler |
| Lindsay Duncan | Evelyn |
| Jenny Slate | Bonnie |
| Octavia Spencer | Roberta Taylor |
| Michael Kendall Kaplan | Justin Gilmore |
| John M. Jackson | Judge Edward Nichols |
| Glenn Plummer | Greg Cullen |
| Elizabeth Marvel | Gloria Davis |
| Candace B. Harris | Carly Rosen |
| Jon Sklaroff | Seymore Shankland |
| Jona Xiao | Lijuan |
| Julie Ann Emery | Pat Golding |
| Keir O'Donnell | Bradley Pollard |
| Joe Chrest | Kevin Larsen |
